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Brief communication: interproximal tooth wear: a new observation
J A Kaidonis1, G C Townsend, L C Richards
1Department of Dentistry, University of Adelaide, Australia.
American Journal of Physical Anthropology
|May 1, 1992
Summary
Microscopic analysis of tooth wear in Australian Aboriginals and whites reveals vertical furrows, challenging the buccolingual movement theory. Tooth tipping and vertical motion are likely key factors in interproximal wear.
Area of Science:
- Dental anthropology
- Paleodontology
- Biomechanics of mastication
Background:
- Interproximal tooth wear is a common phenomenon observed in human dentition.
- Previous research suggested buccolingual movement and mesial migration contribute to this wear pattern.
Purpose of the Study:
- To investigate the microscopic characteristics of proximal tooth wear.
- To evaluate the consistency of observed wear patterns with existing theories of tooth movement.
Main Methods:
- Microscopic examination of wear facets on the proximal surfaces of tooth crowns.
- Detailed observation and measurement of wear features, including furrows.
- Comparison of wear patterns between Australian Aboriginals and whites.
Main Results:
- Observed wear facets exhibited well-defined borders with vertical or near-vertical furrows (0.1–0.5 mm width).
- Interlocking (interdigitation) of furrows between adjacent teeth was noted.
- These findings contradict the prevailing theory of wear driven solely by buccolingual movement.
Conclusions:
- Observed microscopic wear patterns suggest vertical or near-vertical tooth movement, potentially including tipping, is a significant factor in interproximal wear.
- The precise mechanics of tooth movement during wear require further investigation.
- This study provides new insights into the biomechanics of tooth wear and challenges established models.